*.[ch]: manually align parameter lists

In previous patches, extern was mechanically removed from function
declarations without care to formatting, causing parameter lists to be
misaligned. Manually format changed sections such that the parameter
lists should be realigned.

Viewing this patch with 'git diff -w' should produce no output.

Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

serve.h

@@ -3,7 +3,7 @@
 
 struct argv_array;
 int has_capability(const struct argv_array *keys, const char *capability,
-			  const char **value);
+		   const char **value);
 
 struct serve_options {
 	unsigned advertise_capabilities;